Testing the Internal Microphone
In between deployments, we recommend performing a basic test to confirm that the Song Meter Micro 2's built-in microphone is working correctly. Unlike other Song Meter models, the Song Meter Micro 2's microphone is not compatible with typical microphone calibration signal generators, which are usually designed for cylindrical microphones. However, it is possible to perform a basic check of the microphone's sensitivity.
The Song Meter Micro 2 is not intended for recording applications that require consistent, known signal levels. For example, when monitoring the absolute value of ambient noise levels, the accuracy of those measurements depends on knowing the precise sensitivity of the microphone. In this situation, we recommend a recorder whose microphones can be accurately measured using a calibrated signal generator. Other Song Meter models with cylindrical microphones fall into this category.